期刊名称：International Journal of Computer Science and Information Technologies
电子版ISSN：0975-9646
出版年度：2015
卷号：6
期号：1
页码：839-843
出版社：TechScience Publications
摘要：The burden of maintaining a large number of files from the owner to proxy servers can be shifted by usage of secure distributed data storage. Generally proxy servers can convert encrypted files of the owner to encrypted files for the receiver without any knowledge on the content of the original files. It's a practice to remove the original files by the owner for the sake of space efficiency. Thus, the issues on confidentiality and integrity of the outsourced data must be addressed carefully. So, we propose two identity-based secure distributed data storage (IBSDDS) schemes. These schemes can capture the following properties: (1) The file owner can decide the access permission independently without the help of the private key generator (PKG); (2) A receiver can only access one file, instead of all files of the owner for one query; (3) Our schemes are secure against the collusion attacks, i.e., even if the receiver can compromise the proxy servers, intruder cannot obtain the owner’s secret key. Though the first scheme is only secure against the chosen plaintext attacks (CPA), the second scheme is secure against the chosen cipher text attacks (CCA). To the best of our knowledge, it is the first IBSDDS schemes where an access permissions is made by the owner for an exact file and collusion attacks can be protected in the standard model. Experimental results validating our approach are also presented.
关键词：Distributed Data Storage; Identity-based System;Access Control; Security
